Discontinue therapy if myopathy & rhabdomyolysis w/ acute renal failure secondary to myoglobinuria is diagnosed or suspected; there is myalgia at calf, back or whole body; markedly elevated creatinine kinase levels occur; transaminase level is >3x ULN. Consider temporary discontinuation in conditions predisposing to renal failure secondary to rhabdomyolysis/myoglobinuria (eg, sepsis, hypotension, dehydration, major surgery, trauma, severe metabotic, endocrine & electrolyte disorder or uncontrolled seizures). Interrupt treatment if serious liver injury w/ clinical symptoms &/or hyperbilirubinemia or jaundice occur. Immune-mediated necrotizing myopathy; increased HbA1c, serum glucose, & serum transaminase levels. Increased risk of severe myopathy/rhabdomyolysis w/ higher doses. Patients w/ pre-existing amyotrophic lateral sclerosis (ALS); inadequately treated hypothyroidism. Perform LFTs before & 6 & 12 wk after treatment; every 6 mth in patients who routinely use the drug. Monitor increases in serum transaminase level. Assess lipid levels 4 wk after dose initiation or titration. Heavy alcohol use. Concomitant use w/ digoxin & warfarin. Increased risk of myopathy or rhabdomyolysis w/ azole antifungals eg, ketoconazole, itraconazole; macrolides eg, erythromycin, clarithromycin; HIV PIs eg, indinavir, ritonavir, nelfinavir, saquinavir; verapamil; diltiazem; gemfibrozil; nicotinic acid; cyclosporine; amiodarone; colchicine. Avoid concomitant use w/ gemfibrozil. Moderate to severe renal impairment (GFR 15-59 mL/min/1.73 m
2) or ESRD in patients receiving hemodialysis. Avoid use in ped patients. Elderly >65 yr.